Comments on: Colt / Umarex M4 Carbine .22 Tactical Rimfire AR-15

By: george lack

george lack — Fri, 20 Nov 2009 21:19:45 +0000

mike how did you fix it ???????
george

By: george lack

george lack — Fri, 20 Nov 2009 18:01:09 +0000

mike what did you do to fix it
george

By: Mike

Mike — Thu, 19 Nov 2009 21:43:19 +0000

Nevermind….I figured it out and fixed it.

By: Mike

Mike — Thu, 19 Nov 2009 21:08:05 +0000

Has anyone had the problem of the 10 round mags being REALLY hard to take out? I just ordered 3, and they are all really tough to remove. This rifle is slowly becoming a POS in my mind.

By: Alann Beck

Alann Beck — Thu, 19 Nov 2009 05:35:21 +0000

Maybe down the road after all the kinks get worked out and Umarex doesn’t scrap the guns I might look into replacing it. But for now I had to let it go. I only had my muzzle cranked on hand tight to.

By: george lack

george lack — Wed, 18 Nov 2009 12:35:31 +0000

sorry to hear alann that you gave up, i had the same trouble as you to a t . but losening up the flash suppresser and just snugleing it up was my answer to all the problems . now i love the gun .its a blast to shoot.

By: Alann Beck

Alann Beck — Wed, 18 Nov 2009 00:24:31 +0000

m4noop, I see a class action coming out of this down the pike. I can’t really recall ever hearing about a modern gun with so many flaws and repair tickets. I told the gun shop they didn’t have an option. They can eat it or Umarex can. It’s not my job as unsatisfied customer to figure it out. I was probably one of the rare ones to get my money back. When you spend over $670 on a new gun it better be flawless out of the box or you mine as well convert it to a toilet plunger.

By: george lack

george lack — Tue, 17 Nov 2009 22:19:33 +0000

everything was great today, all fired flawlessly again all except thunderbolts but i never really like them too much before anyway. so ithink my troubles are over. must have been the flash suppresser was to tight from the factory

By: m4noop

m4noop — Tue, 17 Nov 2009 13:16:02 +0000

Alann,I’m glad to hear you were able to get your money back.I have sent mine back to thenm 4 different times and have another problem with my M$ now and they have not offred to refund my money. Going to the gun show this weekend and getting a good gun.

By: Alann Beck

Alann Beck — Mon, 16 Nov 2009 21:31:02 +0000

All I can say is I read all the negative after I bought the gun of course and thought I was well prepared before I went out and fired my M4 ops model. What a joke out of the box. Firing pin feather striking. Unspent rounds were ate up just fine by my 10-22. Problem solved. I did send the gun back for good. I am not willing to waste $600 for a chance that I might get a diamond in the rough when it comes to this boat anchor.

By: george lack

george lack — Mon, 16 Nov 2009 19:35:46 +0000

to day at the range i fired .22s federal 500 pack, stingers, spitfire ,aquila and not one hang fire not one feeding problem. i think my trouble was the flash suppresser was too tight from the factory. tomorrow i will do the same execpt i will ad thunderbolts and federal in the red box will let you know tommorow

By: Greg

Greg — Sun, 15 Nov 2009 20:10:26 +0000

I bought the M16 Spec Ops in September and have had a blast with it. Remington “golden bullets” 550 pack from Walmart do NOT work as others have posted. They do work in my 22 Kimber pistol, so the boxes I bought will not be a waste. Federal 550 packs from Walmart work great, but not as accurate as the CCI HP’s. I will use CCI for hunting and target. Then use the Federal for plinking.

The rear pin keeps creeping out on me and I have to keep jamming it back in place. I tightened the muzzle brake and that didn’t seem to help much. Is this a potential problem, or do I just take my rubber hammer and punch to the range??

Put a Leupold 2X7 rimfire scope on the gun and what a great combination. Overall, I am very pleased with this gun and have more fun with it than any other gun I own. My high powered rifles/pistols are getting too expensive to shoot, except for hunting.

By: george lack

george lack — Sun, 15 Nov 2009 08:14:58 +0000

bob thanks for answering i have had a lot of bad strikes with the rem . also stingers the best so far federal not soo good , spitfire not the best have had better strikes since i turned in the screw 9 times but most trouble with feeding . i agree the 30 rd mag stinks it lockes in but i can pull it out with out pressing the mag release even tho it seats in i bought two 50 rd boxes of stingers cci for $13.oo in wallmart bad huh ???? unbeleiveable what ammo is costing these days even .22s

By: Robert

Robert — Sat, 14 Nov 2009 16:41:58 +0000

Hi All, Just wanted to say some positives for the M4 Spec Ops. I now have had it since August and have fireda couple of thousand rounds through it. From reading the forum I must be lucky. I have no problems with it. It eats all types of ammo from Federal 36gr 550 paks from Walmart to Remington Target. I can say it does not like the Remington “golden Bullets” 500 paks. I have never adjusted the bolt spring tension to accommodate any different ammo.
Just on speculation, could most problems be magazine related? I know that I have to give the new mags a good smack to seat them properly but other than that…….

Just wanted to say a positive for the gun. It is fun to shoot!

By: Mike

Mike — Fri, 13 Nov 2009 20:26:21 +0000

George Lack

Do you mean misfires/light stikes? You really have to smack the magazine in because sometimes it won’t seat. I’ve had issues with Winchester Super X ammo from Walmart failing to fire, but even worse luck with the Federal 550’s from Walmart. Using the 550’s I got about 5 fail to fires/light strikes per 30 round clip. In my opinion, they are garbage in my gun, they also leave a really gritty residue in my gun, like someone sprinkled a pinch of sand into the inner working of the rifle. CCI Mini-mags and the Mini-mag HPs work great though.

Bob

You can order them directly from the Umarexusa website.

By: Bob

Bob — Fri, 13 Nov 2009 06:21:11 +0000

Wondering where to find a 30 round mag for this gun. California gun evidently only has 10 rounds.

By: george lack

george lack — Thu, 12 Nov 2009 03:30:15 +0000

thanks john, i havent torn down the rifle yet tho . but i have tryed many different typs of ammo so far the last being spitfire and thay r not that good either. neither is h v aquila . this rifle looks great but what a problem. my gsg5 shoots everything but the problem also is it wont chamber a round most of the times before it fires only i click on a full loading of 10

thanks

By: john1775

john1775 — Thu, 12 Nov 2009 00:04:43 +0000

George,
Take a look at the posts around the July time. A major factor in this weapon cycling properly is the ammo you use. Many folks have posted different types however most everyone has used CCI with success. Additionally I called UMAREX and they confirmed this and warned about using cheaper bulk amm like Walmart Remingtons and Winchesters. Also if you don’t have a manual for the rifle call UMAREX and get one sent to you. They are really good about warranty, however warned me about tearing down the weapon to far as it voids the warranty. I started using CCI’s and enjoy the weapon now but had much frustration before and had to return the weapon once to UMAREX. Good luck.

By: george lack

george lack — Wed, 11 Nov 2009 22:47:30 +0000

mike do you have feeding problems, rounds not feeding after loading a magazine and then putting into the rifle ,pulling the chargeing handle then a click when the trigger is pulled ????????
george

By: george lack

george lack — Wed, 11 Nov 2009 11:28:25 +0000

mikeon thanks for the information

By: george lack

george lack — Tue, 10 Nov 2009 16:56:22 +0000

i am having so much dam trouble with all ammo even the ones that hang fire. the bullets look ok in the mag but when loaded into the rifle and thay still look ok looking in to the breach , when the trigger is pulled i hear that dam click, did not feed a bulley into the chamber / any one no how to fix this problem???? it happens with all mags
thanks

By: Mike

Mike — Mon, 09 Nov 2009 20:30:51 +0000

George,

With the rifle broken in half, unscrew the flash suppressor and remove it, now pull the changing handle back and that will pull the guts out of the rifle, bolt, breech, and barrel.

By: Jason

Jason — Mon, 09 Nov 2009 03:24:52 +0000

I was going to make some custom displays for my local gun shop in trade for an umarex m16spr… I looked at the spec on the m4 and m16 and it shows 13.78 inch rifled length for both, the m16 has a 20 inch barrel, what gives? Is it useless to get the longer barrel or is there a misprint in the specs? I was hoping to have a nice companion to my M1S AR-15 in 545×39 / 20″ & FF tube for squirrel harasment. What would you recommend? Oh and thanks for all the great information, I think it took me an hour to read ALL the comments!

By: george lack

george lack — Mon, 02 Nov 2009 20:00:42 +0000

still waiting for anyone who knows how to remove the bolt from the rifle so i can clean it

By: m4noop

m4noop — Mon, 02 Nov 2009 01:47:32 +0000

Welcome to the new world of Colt HOJO. Sorry to tell you but I was told by Umarex the dust cover is just ornamental,the release latch is ornamental,and the muzzle break has to be loosened a quarter turn to remove the pin. Mine after 3 times back to Umarex still will not fire a whole clip of anything without a misfire and now stays locked to the rear when empty ,requiring me to insert finger into bolt to manually release bolt stop. I have collected guns for a lot of years and this one is the worst new gun I’ve ever had the dis-pleasure of owning.If I didn’t have a conscience I would sell or trade mine in a second.

By: Tim O in NC

Tim O in NC — Sun, 01 Nov 2009 23:19:19 +0000

HOJO
All that is normal for this rifle and I believe covered in manual. Yes the gray square piece is the buffer for the bolt.
Tim NC

By: Hojo

Hojo — Sun, 01 Nov 2009 23:01:24 +0000

Purchased Colt 22rimfire NIB today at Kingsport, TN gunshow. I wish I had inspected it before I left. [I assumed the Colt trademark would be good enough] When I got home and removed it from the box I noticed that that the ejection-port dust-cover wouldn’t latch. The pin to “break open” the lower wouldn’t give to thumb pressure so I had to tap it out with a piece of plastic. When I hinged open the upper and lower, the latch release popped off and piece of plastic approx. 1cm in the shape of cube popped out onto the floor. This 1cm piece seemed to fit behind the bolt. I put every piece back in the box and will call the manufacturer tomorrow. There’s no way I’m going to shoot this weapon or sell it to someone else. I didn’t get a receipt from the dealer but will track serial no. down to get a refund. Caveat emptor………….

By: george lack

george lack — Wed, 28 Oct 2009 18:07:30 +0000

does any one know how to take the bolt out of the rifle ???? i know umarex does not want you to but i need to clean it because it gets real dirty and having it out would be easy

By: 931billie

931billie — Mon, 26 Oct 2009 22:33:47 +0000

I have the colt ops 22lr and love it and also, would like to ask if anyone else has looked for a see thru riser for it wiht any success? I have the standard tactical sight and front fixed sight, but would like put a scope on without losing any of my line of sight. dual sight set up. thanks billie

By: JVandal

JVandal — Mon, 26 Oct 2009 18:19:21 +0000

Double PS….

after two cleanings and all the ammo that has gone through it…. the problems seem to be lessening….

Vandal

By: JVandal

JVandal — Mon, 26 Oct 2009 18:17:18 +0000

Ok…. well over a 1000 rds and still a absolute hoot to plink with….

from my limited experience….

Thunderbolts work near flawlessly (1 misfire, 200 rds)
Winchester Wildcars work flawlessly (0 misfires, over 600 rds)
Remington Vipers ( 1 misfire…. 14 feed issues, 100 rounds)
CCI Mini Mags ( 0 misfire, 300 rds)
Winchester X (7 misfires, 50 rds… but man what a little bitty group….)
Gun show el cheapos Spanish name… spanish writing …. (3 misfires, over 200 rds)
CCI Mini Mag Segmented Ammo ( 0 misfires, 50 rds)

I come by the wildcats pretty cheaply and easy and will probably stick to them… but have a lot of other stuff to use up…. the Vipers are pretty consistent, very tight group (small thumb size hole at 50 yards) but refuse to feed properly. This is probably due to their stepped conical shape.

Amazing how fast you go through 22lr when you loading 30rd clips…

Vandal

ps. nearly every misfire of mine…. came during slow methodical firing…. 1maybe 2 came during fast as I could pull the trigger firing….. hmmmmm

By: Big John

Big John — Mon, 26 Oct 2009 05:35:50 +0000

First thanks for having this forum. I have bought a Colt M4 22Tactical rifle. I live in Alaska and I use my 22’s for what they are intended for, small game and plinking. I’ll still think this gun should of cost $100.00 less.

I removed the front sight/removed the rear sight, put on a picitiny rail adapter with a BSA 4 power scope with steel rings. Very accurate out to 100 yrds, I am quite happy with all the table fare this gun has provided me in the last 3 months. I shoot cci seconds. I have yet to have a fail to fire when my gun is out hunting.

Shoot the same ammo. Try others at the range. The barrel had unsightly 2 drive pin slots from the front sight, easly solved by adding 1 foot of black duct tape wraped around the barrel for emergency use. Never gets hot because the inner barrel is the bore. Rabbits, ruff grouse potato and carrots…Is’t that what it is all about? Great sight…..I’ll be back.

By: george lack

george lack — Thu, 22 Oct 2009 20:03:11 +0000

i have the m 4 22 umarex have had a little trouble with ammo i am still trying different brands. can any 1 tell me hoe to adjust the set screw . i read where some of u turn in nine turns from where do you turn from, when the screw is flush or when the screw is alol the way out. also does anyone know where i can by a front quad rail, umarex sells one for $220.50 witch is almost half the price of the gun. i tried the one from cheaper than dirt but it would not fit because ots for a ar 15 223 ect.

By: Sofaman

Sofaman — Tue, 20 Oct 2009 14:17:39 +0000

Need a mid-range (price) red dot scope for my carbine. Who’s got a decent one???????

By: California Bear

California Bear — Thu, 15 Oct 2009 22:30:58 +0000

I love the look and feel of Colt M4 22Tactical rifle. But felt it was a let down. It is a very expensive little plinker. I am just a kid at heart with dreams that things should work right. The problem with most of all 22 Rifle and pistols is they just don’t preform. Looking backward in time I remember 22’s like remington nylon 66 and Ruger 10/22’s and Sears Ted Williams model 22’s. You could fire almost any ammo throught them and the quality of the gun would last a life time. What happen to well made products that worked. I just don’t know. Thanks to this Web-Site it makes it possiable to communicate about the pit falls of poor weapon’s that we purchase. I myself have sold my Colt M4 to get a Smith&Wesson Mp15 22, From what I have seen on U-Tube and read here it seems tobe the hot 22 rifle for now.

By: Tim O in NC

Tim O in NC — Thu, 15 Oct 2009 22:02:32 +0000

I did some more testing this week at 50 yds with a red dot, my eyes are terrible with out. I was using black box winchester HV 40 gr and they were grouping at 1 moa consistantly. I had never seen this with this carbine, do not even remember the rifle version doing that well. I will take rifle back to range and repeat with this ammo. I also had the GSG AK, GSG MP5, and S&W none matched this grouping with this or any other ammo.
The Colt rifle with target scope did this with CCI standard ammo if memory serves, but have not seen any of the listed guns and cheap ammo preform this well. Had no feeding or FTF issues with this Winchester ammo. I did have some Winchester 36 gr HV and it was not doing as well.
Tim O NC

By: Ganner

Ganner — Thu, 15 Oct 2009 19:16:27 +0000

I went to the range again today and tried some remington thunderbolt ammo that i bought at bass pro shop last week (that’s the only ammo they have) i bought 5 boxes of 50 rds for $1.99 a box and to my surprise it was flawless, also i got a box of fiocchi super match from tunners outdoor sportsman for $8.99 (ouch!!!) and it was dissapointing coz for the price i was expecting it to go well… I had 2 FTF n 1 stove pipe out of the 50 rds, good thing i just bought 1 box just to try them out, i hope i can get my hands on some cci, federal and winchester ammo next week to try them out on my next trip to the shooting range….i still had a blast shooting my m4 ops.

By: JVandal

JVandal — Wed, 14 Oct 2009 15:10:09 +0000

Just bought a M4 and WOW…. What a fun plinker… I’ve only ran about 200 rounds through it and had one mis-feed of a Thunderbolt… (My marlin don’t like them either…LOL… was trying to get rid of the last 20 or so…)

Very Accurate with the Wincherster X ammo. Now I’m looking for a see-thru riser to mount a red-dor optic on this thing…

Joe

By: NorCal

NorCal — Tue, 13 Oct 2009 07:49:01 +0000

Got the M4 Carbine , had the usual remington ammo problems as everone else but the winchesters worked great. Have yet to adjust the “screw” so will probably try that before I cycle CCI mini mags.Iron sights were right on out of the box,too much fun! Did’nt pay a huge amount 499.00 + tax & dros but even with ftf from the remington ammo it was a blast to shoot. Does anyone know if a two piece rail hand guard such as a Troy will fit direct in place of the original hand guard on the carbine.

By: stephen

stephen — Sat, 10 Oct 2009 23:33:57 +0000

Purchased the M4 earlier this week for my wife, first day out today. Remington ammo failed miserably – especially the Golden Bullet, 0% success. Thunderbolts were not good and Viper was Ok, but 2-3 duds per clip. CCI mini mag worked best, but I still have work to do. Plan to try some Federal, and Winchester ammo next time out.

Sure gets dirty, keep it clean – especially the ramp, had a few jam on the tiny, tiny lip where ramp and barrel meet. May take sandpaper to it? Figure I’ll adjust the screw first and see how that works. Could be a cycling thing.

Overall, about what I expected to better than expected. It’s a blast to shoot, seems to deliver a good punch. Figure I’ll just have to devote a little time to tweaking her in.

By: Capt Perry

Capt Perry — Sat, 10 Oct 2009 15:59:17 +0000

I put a Walther P22 thread adapter on my Colt M4 .22 and my .22 suppressor with 1/2-28 fits great. It even will cycle wilh sub-sonic ammo.

The is the only gun I take to my range now

Capt. Perry

By: Ganner

Ganner — Thu, 08 Oct 2009 15:15:25 +0000

I bought the M4 ops on Sept. 22 and I finally got to shoot it yesterday, I have used 100rds each of American eagle HP, Armscor standard velocity and Remington golden bullet,first i tried the Armscor & it flawless then I adjusted the bolt speed spring to high velocity I used the American eagle & i had 4 FTF then lastly the dreaded Remington golden bullet which i also had a bad experience with my Walther p22 & to my surprise I only had 3 FTF & the 3 that didn’t fire I notice that the slug was too loose on it’s casing…all in all the only problem that i encountered was the FTF which wasn’t the gun’s fault but it was the ammo…I’m very happy with my M4 ops.

By: 1903shooter

1903shooter — Sat, 03 Oct 2009 00:58:30 +0000

Just got back from the woods. I fired another 500 rounds. Really, REALLY like this little rifle. Even with the 10+ pound trigger you can fire REAL fast. But still really want to lighten the trigger up. I have ordered one of those Walther Red Dot scopes and 4 extra magazines and am looking more & more at the pictures of the M16 SPR model. Should I or shouldn’t I???????

By: 1903shooter

1903shooter — Fri, 02 Oct 2009 23:34:05 +0000

I was really worried after reading all these posts. I was very reluctant, but purchased the OPS model Tuesday, September 29th. I have now run about 600 rounds through the rifle. I have used Federal 711B, WOLF target, Federal AutoMatch and Eley SPORT. All have worked very well. The AutoMatch is high velocity but I didn’t have to adjust the spring to get it to work, it worked fine with the spring set for standard velocity. I have had some Fail to fire rounds with the Federal 711 but it was not the rifle, the ammo is many years old and have the same problem in my bolt action target rifles. I mounted a Leupold Mark 8 4.5X15 to fire for accuracy. The WOLF shot under 3/4 of an inch (outside edge to outside edge, not center to center) at 50 yards. VERY VERY ACCURATE RIFLE!!! Terrible trigger 10 to 11 pounds when measured with digital trigger pull gage. The front sight post is too short, so with iron sights it shoots high. Will have to call for a replacement. One interesting thing I found was that the .22 BoreSighter spud would not fit the barrel when I tried to sight in the scope. The Walther bore was just to tight, I kinda’ like that. I also like the ‘match chamber’. Like I said earlier, very accurate rifle. I don’t care if I can’t shoot super cheap crap ammo. I would rather have an accurate rifle then a rifle that would shoot cheap junk ammo that also gives 2 inch groups at 50 yards. I am extremely pleased & happy with it and am already thinking about buying the rifle version that has the flip down sights. I am going to try to figure out how to improve the trigger and get it down to about 3 or so pounds, but the trigger is about the only thing I have any kind of problem with. Really happy that I bought it.

By: brian lawrence

brian lawrence — Wed, 30 Sep 2009 01:41:19 +0000

I purchased a Colt M4 .22LR about a month ago and have put close to 1000 rounds through it and I have found some things that I really like and I just recently stumbled upon a couple of things that really honk me off:

Likes:
1. Once I got it dialed in, it shoots like a champ and is a blast to shoot!
2. I have tried CCI and Winchester 333 and it seems to like those quite a bit, although I think I need to adjust the slide speed because I still suffer from the occasional misfeed/failure to eject/etc.

Dislikes
1. Like others have mentioned, I had to run my front sight post up quite a few turns to bring my rounds down. It was shooting at least a foot high at 60-70 yds. Umarex is sending me a taller sight post when they get back in stock.
2. I had to go quite a few clicks to the right on my rear sight aperture to get on paper too. The rifle shot way left out of the box. Umarex said that I might need to adjust my front sight base because apparently they have had issues with them moving during shipping.
3. Still getting an occasional misfeed/failure to eject/etc that I need to adjust for.
4. The trigger pull is almost painful after a few hundred rounds. I want to take it to a gunsmith to see what they can do.
5. Aguila high velocity ammo seems to shoot very high even though winchesters are dead on. not sure if it is the smaller bullet weight or the higher velocity but it looks like it will require a re-zero to shoot this ammo in my rifle.

This really chaps my a$$
I wanted to improve my iron sights even more so I purchased a . 050 NM DCM front sight post and a .030/.040 NM rear aperture thinking I could really get dialed in with my irons. When I received the new sights, I excitedly set about removing the OEM front sight post and screwing in the new one. Only the new one was too thick and would not fit. %#^@%!! Oh, well I thought. I can at least put on the smaller rear aperture, so I took the OEM aperture off and tried screwing the adjuster back in. Again, the adjustment screw was too large to thread into the new aperture. ^#%$@#$!! I have thought about purchasing a replacement AR front sight base and an AR handle but I am worried what new headaches I will run into with that. I thought some of these parts were standard AR parts but that doesn’t seem to be the case.

All in all, I like the rifle, but it will most likely be much better once Umarex gets all of the kinks worked out. It would also be great if they could use standard AR hardware so you could swap stuff out easily.

I hope this helps others.
Brian